also the major part of the country's export frozen lamb trade, as purebreds and first-generation crosses. New Zealand is the world's largest exporter of frozen and chilled lamb. In 2008, NZ sheep-meat exports (mostly of lamb) brought in more than half of the country's NZ$4.5 billion meat export revenues. See also Bradford system Sheep shearing Wool classing References External links The Romney Sheep Breeders Society American Romney Breeders Association North American Romney Association Sheep breeds Sheep breeds originating in England